Population
ICSE · Class 12 · Geography
Complete topic list for Population in ICSE Class 12 Geography. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Population
India's Population – A Global Perspective
- India covers only 2.4% of the world's total surface area (135.79 million sq. km) but supports 17.5% of the world's population.
- India crossed the one billion mark at the dawn of the 21st century, becoming the second country after China to do so.
- In 2023, India surpassed China to become the world's most populous country. India's population in 2024 was approximately 143.8 crore.
Distribution of Population
- Population distribution in India is very uneven across states and union territories.
- Uttar Pradesh has the largest population – 199.5 million (16.49% of India's population).
- Top 5 most populous states: UP (199.5 mn), Maharashtra (112.3 mn), Bihar (103.8 mn), West Bengal (91.3 mn), Andhra Pradesh (84.6 mn). Together they account for about half of India's population.
Density of Population
- Density of population = number of persons per unit area (persons per sq. km).
- India's average density in 2011 = 382 persons per sq. km.
- Density has increased almost five-fold between 1921 (81 persons/sq. km) and 2011 (382 persons/sq. km).
Factors Affecting Distribution and Density of Population
- 1. TERRAIN: Plains support higher density (Great Plain of North India = less than 1/4 of area but more than half the population). Mountains discourage population (Himalayas = 13% of area but only 1-2%
- 2. CLIMATE: Extremes of climate (too cold in Himalayas, too hot/dry in Thar Desert) discourage population. Moderate climate is favourable. Rainfall is more important than temperature in India.
- 3. SOIL: Fertile soils (alluvial soils of northern plains, black soil of Deccan Plateau, coastal plains) support high density. Desert, mountain, and laterite soils support low density.
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